Form and movement in animals Worksheet-9

Form and movement in animals Worksheet-9

Multiple-Choice Question:

31. The ______produces wave-like movements that push the snail's body forward. A trail of mucous is left behind when the snail crawls.

(A) shell                                            (B) liquid skeleton

(C) muscular foot                            (D) none of these

32. Shell of snails  is made up of:

(A) Only calcium carbonate

(B) calcium carbonate and protein

(C) calcium carbonate and phosphate

(D) calcium carbonate within a matrix of fat molecules

33. Snails have a pair of tentacles that bear __________at the tip.

(A) Eyes               (B) tongue           (C) receptor

34. A cockroach's body is covered with a hard outer skeleton called:

(A) chitin             (B) cuticle            (C) cellulose

35. Cockroaches have _____pairs of legs.

(A) three              (B) two                 (C) one                 (D) four

36. Fish have _____ & ______ that help them in swimming.

(A) Fins and cartilages                    (B) Swim bladder and back bone

(C) Fins and a flexible back bone

37. Most fish have a special structure called swim bladder. Which of the following is not correct?

(A) Swim bladder helps them to move up and down in water.

(B) It can be filled with air or emptied

(C) It helps them in self defence

38. The bones of birds are _____.

(A) solid               (B) hollow            (C) thin                (D) None of these

39. Birds don’t have bladders. Why?

(A) Accumulation of waste will make its body heavier

(B) Size of body of birds is very small

(C) Bladder is present in mammals only

(D) None of these

Answer Key:

31. (C)
32. (B)
33. (A)
34. (A)
35. (A)
36. (C)
37. (C)
38. (B)
39. (A)